CN105163084A - Method and device for preventing burn based on liquid crystal display panel - Google Patents
Method and device for preventing burn based on liquid crystal display panel Download PDFInfo
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- CN105163084A CN105163084A CN201510577519.0A CN201510577519A CN105163084A CN 105163084 A CN105163084 A CN 105163084A CN 201510577519 A CN201510577519 A CN 201510577519A CN 105163084 A CN105163084 A CN 105163084A
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Abstract
The invention provides a method and a device for preventing burn based on a liquid crystal display panel. The method comprises the following steps that the liquid crystal display panel judges whether to be in a state managed by a liquid crystal display panel controller; if the liquid crystal display panel is in a state managed by the liquid crystal display panel controller, when the liquid crystal display panel judges that a video image displayed by the liquid crystal display panel is in a stationary state, the liquid crystal display panel controller carries out screen protection processing on the video image; and if the liquid crystal display panel is in an independent operation state, when the liquid crystal display panel judges that the video image displayed by the liquid crystal display panel is in a stationary state, the liquid crystal display panel controller carries out screen protection processing on the video image. The screen protection processing comprises a step of integrally stretching the video image to a preset direction for a pixel of a preset value or integrally shrinking the video image to a preset direction for a pixel of a preset value with a standard position as a base point. Through the scheme of the invention, the liquid crystal display panel displays a still image for a long time while the burn phenomenon cannot occur.
Description
Technical field
The present invention relates to field of video monitoring, particularly relate to a kind of anti-method and apparatus that burns based on liquid crystal panel.
Background technology
For liquid crystal panel product, when the backlight lamp tube of high brightness shows the picture of a geo-stationary for a long time, liquid crystal molecule is polarized owing to being subject to driving for a long time, causes liquid crystal molecule normally can not deflect under signal voltage controls, thus occurs that middle panel divides liquid crystal molecule to burn phenomenon.When now again picture being switched to next picture, original picture can remain in next picture, screen still can be seen the vestige of original still frame.
The liquid crystal panel generally used at present process of preventing burning is the rest image often showing certain hour, and switch and show the image for screen protection of certain hour, the time interval to be protected is through later, then the rest image before recovering to show.Official's module data of such as LG represents the rest image often showing five minutes, need switch and show other images in ten seconds.
But time, above-mentioned processing mode is not also suitable for the field of video monitoring of the uninterrupted display monitoring picture of requirement, the validity of this processing mode impact monitoring in real time, and there is the risk missed and emergency case is carried out to monitoring in real time.And in field of video monitoring, monitoring scene is long static scene is more common situation.So for showing the liquid crystal panel just as easy as rolling off a log appearance bright screen phenomenon of static monitored picture for a long time badly, therefore solution is needed to the problem that the liquid crystal panel being applied to field of video monitoring carries out preventing burning process.
Summary of the invention
In view of this, the invention provides a kind of anti-method and apparatus that burns based on liquid crystal panel, ensure that liquid crystal panel does not occur again screen phenomenon of burning while long-time display rest image, is applicable to the field of video monitoring requiring uninterrupted display monitoring picture.
For achieving the above object, the invention provides a kind of anti-method of burning based on liquid crystal panel, be applied to monitoring and display system, described monitoring and display system comprises liquid crystal panel and liquid crystal panel controller, it is characterized in that, described anti-method of burning comprises:
Liquid crystal panel judges whether it is in by the state of liquid crystal panel controller management;
If liquid crystal panel is in by the state of liquid crystal panel controller management, then, when liquid crystal panel judges that the video image that it shows remains static, by liquid crystal panel controller, screen protection process is carried out to video image; If liquid crystal panel is in independent operating state, then, when liquid crystal panel judges that the video image that it shows remains static, by liquid crystal panel, screen protection process is carried out to video image.
Furthermore, described liquid crystal panel judges that the video image that it shows remains static, specifically comprise: liquid crystal panel, the image information of current monitor Period Start Time and the image information of current monitor period end time is obtained according to the monitoring period preset, and both are compared, if both are identical image, then judge that the video image that it shows remains static.
Furthermore, described screen protection process, specifically comprises: take normal place as basic point, by overall for the video image pixel to preset direction stretching default value or by overall for video image pixel of shrinking default value to preset direction.
Furthermore, described liquid crystal panel controller carries out screen protection process to video image, also comprise: the screen protection process request that liquid crystal panel controller receiving liquid crystal panel sends, when this liquid crystal panel and other liquid crystal panels show piece image jointly, the video image after screen protection process and display position information send to each participation comprising this liquid crystal panel jointly to show the liquid crystal panel of piece image by liquid crystal panel controller; When this liquid crystal panel independently shows piece image, the video image after screen protection process and display position information are sent to this liquid crystal panel by liquid crystal panel controller.
Furthermore, described anti-method of burning also comprises: if liquid crystal panel is in by the state of liquid crystal panel controller management, then when liquid crystal panel judges that its video image shown becomes nonstatic state from inactive state, by liquid crystal panel controller, video image is returned to normal place and show; If liquid crystal panel is in independent operating state, then when liquid crystal panel judges that its video image shown becomes nonstatic state from inactive state, by liquid crystal panel, video image is returned to normal place and show.
Based on same design, the invention provides a kind of anti-device that burns based on liquid crystal panel, be applied to monitoring and display system, described monitoring and display system comprises liquid crystal panel and liquid crystal panel controller, it is characterized in that, the described anti-device that burns comprises:
Liquid crystal panel mode of operation judge module, for judging whether liquid crystal panel is in by the state of liquid crystal panel controller management;
Video image inactive state judge module, for judging whether the video image that liquid crystal panel shows remains static;
Screen protection processing module, for carrying out screen protection process to video image;
Described screen protection processing module, also for: if liquid crystal panel is in by the state of liquid crystal panel controller management, then when the video image judging that liquid crystal panel shows remains static, by liquid crystal panel controller, screen protection process is carried out to video image; If liquid crystal panel is in independent operating state, then, when the video image judging that liquid crystal panel shows remains static, by liquid crystal panel, screen protection process is carried out to video image.
Furthermore; described video image inactive state judge module; specifically comprise: liquid crystal panel obtains the image information of current monitor Period Start Time and the image information of current monitor period end time according to the monitoring period preset; and both are compared; if both are identical image; then judge that the video image that it shows remains static, need to carry out screen protection process.
Furthermore, described screen protection process, specifically comprises: take normal place as basic point, by overall for the video image pixel to preset direction stretching default value or by overall for video image pixel of shrinking default value to preset direction.
Furthermore, described liquid crystal panel controller carries out screen protection process to video image, also comprise: the screen protection process request that liquid crystal panel controller receiving liquid crystal panel sends, when this liquid crystal panel and other liquid crystal panels show piece image jointly, the video image after screen protection process and display position information send to each participation comprising this liquid crystal panel jointly to show the liquid crystal panel of piece image by liquid crystal panel controller; When this liquid crystal panel independently shows piece image, the video image after screen protection process and display position information are sent to this liquid crystal panel by liquid crystal panel controller.
Furthermore, the described anti-device that burns also comprises:
Normal place recovers module, for video image being returned to normal place display;
Described normal place recovers module, also for: if liquid crystal panel is in by the state of liquid crystal panel controller management, then when the video image judging that liquid crystal panel shows becomes nonstatic state from inactive state, by liquid crystal panel controller, video image is returned to normal place and show; If liquid crystal panel is in independent operating state, then when the video image judging that liquid crystal panel shows becomes nonstatic state from inactive state, by liquid crystal panel, video image is returned to normal place and show.
Based on technique scheme; the present invention is by the process of long-time uninterrupted display monitoring picture; set a rational monitoring period; when the video image judging that liquid crystal panel shows remains static in this monitoring period; screen protection process is carried out to video image; namely be basic point with normal place, by overall for video image to preset direction stretch rational default value pixel or by overall for video image pixel of shrinking rational default value to preset direction.Through the video image of screen protection process, the picture material of its each location of pixels there occurs change, namely serves the effect preventing liquid crystal panel from burning.And the pixel of rational default value stretches or contraction phase is very little change for view picture video image, overall picture can not be made to have obvious change, therefore image quality perception can not be affected and reduce user experience, and meet the demand of uninterrupted display monitoring picture.Therefore the anti-method and apparatus that burns based on liquid crystal panel provided by the invention, can ensure that liquid crystal panel does not occur again screen phenomenon of burning while long-time display rest image, is applicable to the field of video monitoring requiring uninterrupted display monitoring picture.
Accompanying drawing explanation
Fig. 1 is the liquid crystal panel splicing setting position figure in one embodiment of the present invention;
Fig. 2 is the method flow diagram by liquid crystal panel controller, video image being carried out to screen protection in one embodiment of the present invention;
Fig. 3 is the method flow diagram by liquid crystal panel, video image being carried out to screen protection in one embodiment of the present invention;
Fig. 4 is the structure chart of the anti-device that burns based on liquid crystal panel in one embodiment of the present invention.
Embodiment
Be described in further details technical solution of the present invention below in conjunction with drawings and Examples, following examples do not form limitation of the invention.
In order to solve the problem mentioned in background technology, the invention provides a kind of anti-method of burning based on liquid crystal panel, the method comprises:
Liquid crystal panel judges whether it is in by the state of liquid crystal panel controller management; If liquid crystal panel is in by the state of liquid crystal panel controller management, then, when liquid crystal panel judges that the video image that it shows remains static, by liquid crystal panel controller, screen protection process is carried out to video image; If liquid crystal panel is in independent operating state, then, when liquid crystal panel judges that the video image that it shows remains static, by liquid crystal panel, screen protection process is carried out to video image.
In field of video monitoring, monitoring and display system can be single liquid crystal panel, and can be N number of independent liquid crystal panel used, also can be the composition of M liquid crystal panel and 1 liquid crystal panel controller, wherein N and M be the natural number being more than or equal to 2.Different according to application scale, the building form of monitoring and display system is also different.Wherein liquid crystal panel controller can be splicing controller, the DC (decoder, Video Decoder) of band splicing controlling functions or the server of band splicing controlling functions, and the present invention is not restricted this.Anti-method of burning based on liquid crystal panel provided by the invention, is applicable to the various application scale of field of video monitoring.
Can carry out interactive communication by privately owned signaling or standard signaling between liquid crystal panel and liquid crystal panel controller, the present invention is not restricted this.As an example, liquid crystal panel, when powering on operation and receiving consecutive image data, initiatively sent at interval of 10 seconds the message being used for keep-alive to liquid crystal panel controller, if receive keep-alive success message, then thought that this keep-alive is successful; If receive keep-alive failed message or all do not receive the reply message that liquid crystal panel controller sends in 10 seconds, then think this keep-alive failure.If continuous 3 keep-alives failure, then think that this liquid crystal panel is that single liquid crystal panel independently uses, follow-uply no longer carry out keep-alive; If continuous 3 keep-alives success, then think that this liquid crystal panel is by liquid crystal panel controller management, within follow-up every 60 seconds, carry out a keep-alive.
Liquid crystal panel also can passive keep-alive; namely initiatively keep-alive message is sent to the liquid crystal panel of its management by liquid crystal panel controller; concrete keepalive period also can be arranged according to embody rule, and the present invention is not restricted the keep-alive mode between liquid crystal panel and liquid crystal panel controller.
Embodiment one is described with the example that consists of of monitoring and display system by M liquid crystal panel and 1 liquid crystal panel controller, wherein M be more than or equal to 2 natural number.In the present embodiment, liquid crystal panel number is 9, and each liquid crystal panel connecting method is as shown in Figure 1 arranged, and wherein shields 1 and refers to liquid crystal panel 1, the liquid crystal panel 2 that screen 2 refers to, by that analogy.Each liquid crystal panel is managed by liquid crystal panel controller, wherein shield 1, shield 2, shield 4 and screen 5 display one width video images jointly, namely shield 1, shield 2, shield 4 and each picture materials showing these width video images 1/4th of screen 5, send the image location information of video image and the display of each liquid crystal panel needs to the liquid crystal panel of correspondence by liquid crystal panel controller, each liquid crystal panel shows corresponding video image according to the video image received and display position information; The independent display of other screens one width video image.The scheme that the image location information that wherein liquid crystal panel controller sends video image and the display of each liquid crystal panel needs shows involved by corresponding video image according to the view image received and display position information to the scheme involved by the liquid crystal panel of correspondence and liquid crystal panel all belongs to prior art, and the present invention repeats no more.
In the present embodiment, liquid crystal panel is in by the state of liquid crystal panel controller management, then, when liquid crystal panel judges that the video image that it shows remains static, carry out screen protection process by liquid crystal panel controller to video image.Please refer to the drawing 2, liquid crystal panel controller comprises the steps: the process that video image carries out screen protection process
S201, liquid crystal panel A judge whether the video image of its display in a monitoring period remains static, and if so, then send screen protection request to liquid crystal panel controller, and turn S202 process; Otherwise turn S203 process.
This monitoring period is arranged in conjunction with liquid crystal panel hardware itself and application scenarios, and in the present embodiment, this monitoring period is 10 minutes.Liquid crystal panel A obtains image information and the image information of this monitoring period end time of a monitoring period time started, and both are compared, if both are identical image, then think that current video image remains static, and need to carry out screen protection process; If both are different images, then think that current video image is in nonstatic state, be namely kept in motion.Judge that the method whether video image is static can also select other modes, do not limit at this.
In monitoring and display system, each liquid crystal panel all can judge whether its video image shown remains static in a monitoring period separately.The present embodiment for convenience of description, is only illustrated the deterministic process of wherein 1 liquid crystal panel, and claims this liquid crystal panel to be liquid crystal panel A.
S202, liquid crystal panel controller, according to above-mentioned screen protection request, carry out screen protection process to video image, and turn S204 process.
Screen protection process comprises: take normal place as basic point, by overall for the video image pixel to preset direction stretching default value or by overall for video image pixel of shrinking default value to preset direction.
Normal place is the position of initial video image display, does not namely carry out the display position of the video image of screen protection process.
As an example, liquid crystal panel A judges that the video image that it shows remains static first, namely needs to carry out the 1st screen protection process to video image; Liquid crystal panel controller is according to strategy table 1 Suo Shi, and take normal place as basic point, stretch video image integral level to the right 1 pixel.In next monitoring period, liquid crystal panel A judges that again the video image that it shows remains static; namely need to carry out the 2nd screen protection process to video image; liquid crystal panel controller is according to strategy table 1 Suo Shi; take normal place as basic point, stretch video image integral level to the right 2 pixels.And when carrying out the 30th screen protection process to video image, according to strategy table 1 Suo Shi, take normal place as basic point, stretch video image integral level to the right 0 pixel, stretch 0 pixel vertically downward, namely returns to normal place.When carrying out the 31st screen protection process to video image, according to strategy table 1 Suo Shi, take normal place as basic point, stretch video image integral level to the right 1 pixel.Namely for the screen protection process of continuous trigger, liquid crystal panel controller carries out screen protection process according to strategy table 1 Suo Shi to video image, carries out cyclic tension process to video image by strategy.
The stretching of 1 to 3 pixel is very little change relative to view picture video image, overall picture can not be made to have obvious change, therefore image quality perception can not be affected and reduce user experience, and the video image after stretching is relative to the video image before stretching, the picture material of each location of pixels there occurs change, therefore the video image after stretching is used for display, serve the effect preventing liquid crystal panel from burning.
Table 1
Screen protection processing policy also can be strategy as shown in table 2, and also can be strategy as shown in table 3, this is not restricted in the present invention.
Table 2
Table 3
S203, liquid crystal panel A send request video image being returned to normal place display to liquid crystal panel controller, video image is returned to normal place display according to this request by liquid crystal panel controller, and turns S204 process.
Liquid crystal panel A judges that current video image is in nonstatic state, is namely kept in motion, therefore does not need to carry out screen protection process.If a upper monitoring period judges that video image remains static, namely carried out screen protection process, so the display position of current video image just not necessarily normal place.As a preferred embodiment, as long as then liquid crystal panel A judges that current video image is in nonstatic state, just send request video image being returned to normal place display to liquid crystal panel controller.Certainly, liquid crystal panel A also first can judge whether the video image of current display is in normal place display, if current video image has been in normal place display, then does not need to carry out shift in position process; If current video image is not in normal place display, then sends request video image being returned to normal place display to liquid crystal panel controller.
Request video image being returned to normal place display that liquid crystal panel controller sends according to liquid crystal panel A, returns to normal place display by video image.Video image is returned to the process of normal place display, simplify screen protection processing policy, make the display effect of video image better simultaneously.
As an example; need to carry out screen protection process to video image if a upper monitoring period liquid crystal panel A judges that video image that it shows remains static; and be the 4th screen protection process; liquid crystal panel controller is according to strategy table 1 Suo Shi; take normal place as basic point; stretch video image integral level to the right 3 pixels, and stretch 1 pixel vertically upward.Liquid crystal panel A judges that the video image of its display in the current monitor cycle is in nonstatic state, therefore sends request video image being returned to normal place display to liquid crystal panel controller; Video image is returned to normal place display by liquid crystal panel controller, and be namely basic point with normal place, stretch video image integral level to the right 0 pixel, and stretch 0 pixel vertically upward, and the video image after processing is shown according to normal place.Need to carry out screen protection process if liquid crystal panel A judges that in next monitoring period video image that it shows remains static, liquid crystal panel controller then thinks that this screen protection is treated to the 1st screen protection process, according to strategy table 1 Suo Shi, take normal place as basic point, stretch video image integral level to the right 1 pixel; If liquid crystal panel A judges that in next monitoring period its video image shown still is in nonstatic state, then send request video image being returned to normal place display to liquid crystal panel controller.
S204, liquid crystal panel controller judge that whether liquid crystal panel A is for single image segmentation display, namely whether liquid crystal panel A cooperatively shows piece image with other liquid crystal panels, if so, then each participation comprising liquid crystal panel A is sent to jointly to show the liquid crystal panel of piece image the video image after process and display position information; Otherwise, the video image after process and display position information are sent to liquid crystal panel A.Liquid crystal panel controller returns the processed message of screen protection again to liquid crystal panel A, and turns S205 process.
As an example, each liquid crystal panel connecting method is as shown in Figure 1 arranged, and wherein shields 1 and refers to liquid crystal panel 1, the liquid crystal panel 2 that screen 2 refers to, by that analogy.Each liquid crystal panel is managed by liquid crystal panel controller, wherein shield 1, screen 2, screen 4 and screen 5 for jointly showing a width video image, namely shield 1, screen 2, screen 4 and screen 5 respectively these width video images of display 1/4th picture materials.If liquid crystal panel 1 judges that the video image of its display within the current monitor cycle remains static, then send screen protection request to liquid crystal panel controller; Liquid crystal panel controller, according to this request, carries out screen protection process to the video image that liquid crystal panel 1 shows according to screen protection processing policy; Due to liquid crystal panel 1, liquid crystal panel 2, liquid crystal panel 4 and liquid crystal panel 5 this width video image of display jointly, therefore the image after process and each liquid crystal panel need the image location information of display to send to liquid crystal panel 1, liquid crystal panel 2, liquid crystal panel 4 and liquid crystal panel 5 by liquid crystal panel controller, then return the processed message of screen protection to liquid crystal panel 1; Each liquid crystal panel shows corresponding video image according to the video image received and display position information.If liquid crystal panel 3 judges that the video image of its display within the current monitor cycle remains static, then send screen protection request to liquid crystal panel controller; Liquid crystal panel controller, according to described request, carries out screen protection process to the video image that liquid crystal panel 3 shows according to screen protection processing policy; Because liquid crystal panel 3 is independent display one width video image, therefore the video image after process and display position information are sent to liquid crystal panel 3 by liquid crystal panel controller, then return the processed message of screen protection to liquid crystal panel 3.The scheme that the image location information that wherein liquid crystal panel controller sends video image and the display of each liquid crystal panel needs shows involved by corresponding video image according to the video image received and display position information to the scheme involved by the liquid crystal panel of correspondence and liquid crystal panel all belongs to prior art, and the present invention repeats no more.
Whether S205, liquid crystal panel A restart a monitoring period and remain static in this monitoring period for the video image of monitoring its display, and turn S201 process.
Liquid crystal panel A is after the processed message of screen protection receiving the transmission of liquid crystal panel controller; restart a monitoring period whether to remain static in this monitoring period for the video image of monitoring its display; if judge, its video image shown remains static in this monitoring period, then carry out screen protection process.Concrete processing procedure is the process as described in this five steps of S201 to S205, herein no longer repeat specification.
As an example; liquid crystal panel is when powering on operation and receiving consecutive image data; think that this liquid crystal panel is in the state of display continuous videos image; the video image of monitoring its display according to the monitoring period preset then is needed whether to remain static in this monitoring period; if judge, its video image shown remains static in this monitoring period, then carry out screen protection process.Liquid crystal panel power on run but within a period of time, do not receive view data; then think this liquid crystal panel do not receive can due to display view data; then switch and show the picture for screen protection, the particular content of the present invention to the picture for screen protection is not restricted.
Embodiment two is that single liquid crystal panel is described for monitoring and display system, when liquid crystal panel judges that the video image that it shows remains static, directly carries out screen protection process to video image.
Liquid crystal panel is in independent operating state in the present embodiment, then, when liquid crystal panel judges that the video image that it shows remains static, carry out screen protection process by liquid crystal panel to video image.Please refer to the drawing 3, liquid crystal panel carries out the process of screen protection process to video image, comprises the steps:
S301, liquid crystal panel B judge whether the video image of its display in a monitoring period remains static, and if so, then turns S302 process; Otherwise turn S303 process.
This monitoring period is arranged in conjunction with liquid crystal panel hardware itself and application scenarios, and in the present embodiment, this monitoring period is 10 minutes.Liquid crystal panel B obtains image information and the image information of this monitoring period end time of a monitoring period time started, and both are compared, if both are identical image, then think that current video image remains static, and need to carry out screen protection process; If both are different images, then think that current video image is in nonstatic state, be namely kept in motion.Judge that the method whether video image is static can also select other modes, do not limit at this.
The present embodiment for convenience of description, claims this liquid crystal panel to be liquid crystal panel B.
S302, liquid crystal panel B carry out screen protection process to video image.
When liquid crystal panel B judges that the video image of its display in the current monitor cycle remains static, screen protection process is carried out to video image.The position that initial video image shows by liquid crystal panel B, as normal place, is about to the display position of the video image not carrying out screen protection process as normal place.Liquid crystal panel B comprises the screen protection process that video image carries out: take normal place as basic point, by overall for the video image pixel to preset direction stretching default value or by overall for video image pixel of shrinking default value to preset direction.
The screen protection processing policy of liquid crystal panel B can be the strategy as shown in table 1, table 2 or table 3, and this is not restricted in the present invention.
As an example; liquid crystal panel B judges that the video image that it shows remains static first, namely needs to carry out the 1st screen protection process to video image, and according to strategy table 2 Suo Shi; take normal place as basic point, stretch video image integral level to the right 1 pixel.In next monitoring period, liquid crystal panel B judges that again the video image that it shows remains static; namely need to carry out the 2nd screen protection process to video image; and according to strategy table 1 Suo Shi; take normal place as basic point; stretch video image integral level to the right 1 pixel, and stretch 1 pixel vertically upward.And when carrying out the 6th screen protection process to video image, according to strategy table 2 Suo Shi, take normal place as basic point, stretch video image integral level left 0 pixel, stretch 0 pixel vertically upward, namely returns to normal place.When carrying out the 7th screen protection process to video image, according to strategy table 2 Suo Shi, take normal place as basic point, stretch video image integral level to the right 1 pixel.Namely for the screen protection process of continuous trigger, liquid crystal panel B carries out screen protection process according to strategy table 2 Suo Shi to video image, carries out cyclic tension process to video image by strategy.
The stretching of 1 to 3 pixel is very little change relative to view picture video image, overall picture can not be made to have obvious change, therefore image quality perception can not be affected and reduce user experience, and the video image after stretching is relative to the video image before stretching, the picture material of each location of pixels there occurs change, therefore the video image after stretching is used for display, serve the effect preventing liquid crystal panel from burning.
S303, liquid crystal panel B judge whether current video image is in normal place display, if so, then turns S304 process, otherwise video image are returned to normal place display, then turn S304 process.
When liquid crystal panel B judges that the video image of its display in the current monitor cycle is in nonstatic state, then judge whether current video image is in normal place display further, if current video image is not in normal place display, then video image is returned to normal place display.Also can simplify processes process, when liquid crystal panel B judges that the video image of its display in the current monitor cycle is in nonstatic state, directly video image is returned to normal place display.Video image is returned to normal place display, simplify screen protection processing policy, and the effect that video image is shown is better.
As an example, within the current monitor cycle, liquid crystal panel B judges that the video image that it shows is in nonstatic state, then judge whether current video image is in normal place display further, find that current video image take normal place as basic point, integral level stretches to the right the video image after 2 processes pixel, therefore judge that current video image is not in normal place display, then video image is returned to normal place display, namely be basic point with normal place, stretch video image integral level to the right 0 pixel, video image after processing is shown according to normal place.Need to carry out screen protection process if liquid crystal panel B judges that video image that it shows remains static in next monitoring period, then think that this screen protection is treated to the 1st screen protection process, according to strategy table 1 Suo Shi, take normal place as basic point, stretch video image integral level to the right 1 pixel; If liquid crystal panel B judges that its video image shown still is in nonstatic state in next monitoring period, then video image is remained on normal place display.
Whether S304, liquid crystal panel B restart a monitoring period and remain static in this monitoring period for the video image of monitoring its display, and turn S301 process.
Liquid crystal panel B complete screen protection process or complete the display position video image being in nonstatic state being returned to normal place display or judge to be in the video image of nonstatic state be exactly normal place after; restart a monitoring period whether to remain static in this monitoring period for the video image of monitoring its display; if judge, its video image shown remains static in this monitoring period, then carry out screen protection process.Concrete processing procedure is the process as described in S301 to S304 four steps, no longer repeat specification herein.
Based on same design, the present invention also provides a kind of anti-device that burns based on liquid crystal panel, and be applied to monitoring and display system, described monitoring and display system comprises liquid crystal panel and liquid crystal panel controller.
As shown in Figure 4, be the structure chart of the anti-device that burns based on liquid crystal panel that the present invention proposes, this device comprises:
Liquid crystal panel mode of operation judge module, for judging whether liquid crystal panel is in by the state of liquid crystal panel controller management;
Video image inactive state judge module, for judging whether the video image that liquid crystal panel shows remains static;
Screen protection processing module, for carrying out screen protection process to video image;
Described screen protection processing module, also for: if liquid crystal panel is in by the state of liquid crystal panel controller management, then when the video image judging that liquid crystal panel shows remains static, by liquid crystal panel controller, screen protection process is carried out to video image; If liquid crystal panel is in independent operating state, then, when the video image judging that liquid crystal panel shows remains static, by liquid crystal panel, screen protection process is carried out to video image.
Furthermore; described video image inactive state judge module; specifically comprise: liquid crystal panel obtains the image information of current monitor Period Start Time and the image information of current monitor period end time according to the monitoring period preset; and both are compared; if both are identical image; then judge that the video image that it shows remains static, need to carry out screen protection process.
Furthermore, described screen protection process, specifically comprises: take normal place as basic point, by overall for the video image pixel to preset direction stretching default value or by overall for video image pixel of shrinking default value to preset direction.
Furthermore, described liquid crystal panel controller carries out screen protection process to video image, also comprise: the screen protection process request that liquid crystal panel controller receiving liquid crystal panel sends, when this liquid crystal panel and other liquid crystal panels show piece image jointly, the video image after screen protection process and display position information send to each participation comprising this liquid crystal panel jointly to show the liquid crystal panel of piece image by liquid crystal panel controller; When this liquid crystal panel independently shows piece image, the video image after screen protection process and display position information are sent to this liquid crystal panel by liquid crystal panel controller.
Furthermore, the described anti-device that burns also comprises:
Normal place recovers module, for video image being returned to normal place display;
Described normal place recovers module, also for: if liquid crystal panel is in by the state of liquid crystal panel controller management, then when the video image judging that liquid crystal panel shows becomes nonstatic state from inactive state, by liquid crystal panel controller, video image is returned to normal place and show; If liquid crystal panel is in independent operating state, then when the video image judging that liquid crystal panel shows becomes nonstatic state from inactive state, by liquid crystal panel, video image is returned to normal place and show.
By the anti-method and apparatus that burns based on liquid crystal panel provided by the invention, can ensure that liquid crystal panel does not occur again screen phenomenon of burning while long-time display rest image, be applicable to the field of video monitoring requiring uninterrupted display monitoring picture.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (10)
1. based on an anti-method of burning for liquid crystal panel, be applied to monitoring and display system, described monitoring and display system comprises liquid crystal panel and liquid crystal panel controller, it is characterized in that, described anti-method of burning comprises:
Liquid crystal panel judges whether it is in by the state of liquid crystal panel controller management;
If liquid crystal panel is in by the state of liquid crystal panel controller management, then, when liquid crystal panel judges that the video image that it shows remains static, by liquid crystal panel controller, screen protection process is carried out to video image;
If liquid crystal panel is in independent operating state, then, when liquid crystal panel judges that the video image that it shows remains static, by liquid crystal panel, screen protection process is carried out to video image.
2. anti-method of burning as claimed in claim 1, it is characterized in that, described liquid crystal panel judges that the video image that it shows remains static, and specifically comprises:
Liquid crystal panel, the image information of current monitor Period Start Time and the image information of current monitor period end time is obtained according to the monitoring period preset, and both are compared, if both are identical image, then judge that the video image that it shows remains static.
3. anti-method of burning as claimed in claim 1, it is characterized in that, described screen protection process, specifically comprises:
Take normal place as basic point, by overall for the video image pixel to preset direction stretching default value or by overall for video image pixel of shrinking default value to preset direction.
4. anti-method of burning as claimed in claim 3, it is characterized in that, described liquid crystal panel controller carries out screen protection process to video image, also comprises:
The screen protection process request that liquid crystal panel controller receiving liquid crystal panel sends, when this liquid crystal panel and other liquid crystal panels show piece image jointly, the video image after screen protection process and display position information send to each participation comprising this liquid crystal panel jointly to show the liquid crystal panel of piece image by liquid crystal panel controller;
When this liquid crystal panel independently shows piece image, the video image after screen protection process and display position information are sent to this liquid crystal panel by liquid crystal panel controller.
5. anti-method of burning as claimed in claim 1 or 2, is characterized in that, described anti-method of burning also comprises:
If liquid crystal panel is in by the state of liquid crystal panel controller management, then when liquid crystal panel judges that its video image shown becomes nonstatic state from inactive state, by liquid crystal panel controller, video image is returned to normal place and show;
If liquid crystal panel is in independent operating state, then when liquid crystal panel judges that its video image shown becomes nonstatic state from inactive state, by liquid crystal panel, video image is returned to normal place and show.
6. based on the anti-device that burns of liquid crystal panel, be applied to monitoring and display system, described monitoring and display system comprises liquid crystal panel and liquid crystal panel controller, it is characterized in that, the described anti-device that burns comprises:
Liquid crystal panel mode of operation judge module, for judging whether liquid crystal panel is in by the state of liquid crystal panel controller management;
Video image inactive state judge module, for judging whether the video image that liquid crystal panel shows remains static;
Screen protection processing module, for carrying out screen protection process to video image;
Described screen protection processing module, also for: if liquid crystal panel is in by the state of liquid crystal panel controller management, then when the video image judging that liquid crystal panel shows remains static, by liquid crystal panel controller, screen protection process is carried out to video image; If liquid crystal panel is in independent operating state, then, when the video image judging that liquid crystal panel shows remains static, by liquid crystal panel, screen protection process is carried out to video image.
7. the anti-device that burns as claimed in claim 6, it is characterized in that, described video image inactive state judge module, specifically comprises:
Liquid crystal panel obtains the image information of current monitor Period Start Time and the image information of current monitor period end time according to the monitoring period preset; and both are compared; if both are identical image; then judge that the video image that it shows remains static, need to carry out screen protection process.
8. the anti-device that burns as claimed in claim 6; it is characterized in that; described screen protection process, specifically comprises: take normal place as basic point, by overall for the video image pixel to preset direction stretching default value or by overall for video image pixel of shrinking default value to preset direction.
9. the anti-device that burns as claimed in claim 6, it is characterized in that, described liquid crystal panel controller carries out screen protection process to video image, also comprises:
The screen protection process request that liquid crystal panel controller receiving liquid crystal panel sends, when this liquid crystal panel and other liquid crystal panels show piece image jointly, the video image after screen protection process and display position information send to each participation comprising this liquid crystal panel jointly to show the liquid crystal panel of piece image by liquid crystal panel controller;
When this liquid crystal panel independently shows piece image, the video image after screen protection process and display position information are sent to this liquid crystal panel by liquid crystal panel controller.
10. the anti-device that burns as claimed in claims 6 or 7, it is characterized in that, the described anti-device that burns also comprises:
Normal place recovers module, for video image being returned to normal place display;
Described normal place recovers module, also for: if liquid crystal panel is in by the state of liquid crystal panel controller management, then when the video image judging that liquid crystal panel shows becomes nonstatic state from inactive state, by liquid crystal panel controller, video image is returned to normal place and show; If liquid crystal panel is in independent operating state, then when the video image judging that liquid crystal panel shows becomes nonstatic state from inactive state, by liquid crystal panel, video image is returned to normal place and show.
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| CN201510577519.0A CN105163084A (en) | 2015-09-11 | 2015-09-11 | Method and device for preventing burn based on liquid crystal display panel |
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| CN201510577519.0A CN105163084A (en) | 2015-09-11 | 2015-09-11 | Method and device for preventing burn based on liquid crystal display panel |
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Application publication date: 20151216 |